CN101820096B - Compact antenna system with a diversity order of 2 - Google Patents

Compact antenna system with a diversity order of 2 Download PDF

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Publication number
CN101820096B
CN101820096B CN201010125377.1A CN201010125377A CN101820096B CN 101820096 B CN101820096 B CN 101820096B CN 201010125377 A CN201010125377 A CN 201010125377A CN 101820096 B CN101820096 B CN 101820096B
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CN
China
Prior art keywords
ground plane
antenna system
slit
radiating element
radiating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201010125377.1A
Other languages
Chinese (zh)
Other versions
CN101820096A (en
Inventor
让-卢克·勒布拉斯
菲利浦·米纳德
让-弗朗索瓦·平托斯
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Thomson Licensing SAS
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Thomson Licensing SAS
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Filing date
Publication date
Application filed by Thomson Licensing SAS filed Critical Thomson Licensing SAS
Publication of CN101820096A publication Critical patent/CN101820096A/en
Application granted granted Critical
Publication of CN101820096B publication Critical patent/CN101820096B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)
  • Details Of Aerials (AREA)

Abstract

The present invention relates to a very compact antenna system with a diversity order of 2. An antenna system with a diversity order of 2 integrated on an electronic card comprising a first radiating element of F-inverted type (11) with a first extremity connected to a ground plane, a second extremity free (11') and a conductive power supply part (11''), a second radiating element of F-inverted type (13) with a first extremity connected to a ground plane, a second extremity free (13') and a conductive power supply part (13''), characterized in that the free extremities of the first and second radiating elements are opposite one another and are separated by a projecting element (15) of the ground plane (12). Application in electronic cards for multi-standard communication devices.

Description

There is the compact antenna system of 2 diversity orders
Technical field
The present invention relates to a kind of compact antenna system with 2 diversity orders, more particularly relate to for radio communication device as the antenna system of multi-standard word platform or gateway.
Background technology
Digital platform or gateway on market provides multinomial service by wireless link at present.Therefore, they must support multiple standards, as the standard of the digital telephone communication for implementing DECT (digital enhanced cordless telecommunications) function or for high bit rate wireless communication standard, as IEEE802.11a, b, g standard.
In addition, such radio communication is carried out sometimes in house (premise), in this case, can observe multipath phenomenon, this phenomenon is very unfavorable for the quality of received signal, especially, can observe interference phenomenon, this can cause signal attenuation.
In order to overcome the problems referred to above, use the antenna system with 2 diversity orders.But, in order to obtain correct diversity, require two ideally decorrelations of antenna.Thus, those skilled in the art are tending towards antenna to be spaced apart from each other.But the radio communication device on market is more and more compacter at present, this has just proposed a difficult problem aspect the position of the direct antenna forming in the electronic cards of holding other treatment circuits.
Propose various solutions and overcome shortcoming above.Thereby, in the patent application WO2007/006982 with TOMSONLisensing name, proposed two type antenna of falling F to be back-to-back integrated in electronic cards.In order to improve two decouplings between the type antenna of falling F, it is the slit of λ g/4 that length is preferably provided.Such antenna system is shown in Figure 1.
In this case, the antenna 3 and 4 of two types of falling F of etching on the substrate 1 with ground plane 2.Antenna 3 and 4 is in the embodiment shown along the periphery the being perpendicular to one another location of substrate 1.They are connected with 4 ' by the end 3 ' on their formation ground, meanwhile, free terminal 3 ", 4 " be stretched over separately the metallized part that do not have of substrate, described part is identified by A, B respectively.
In this case, end 3 ' and 4 ' is connected to ground plane 2, and in the embodiment shown, provides slit 5 to improve two decouplings between antenna.Each antenna 3 and 4 is connected to feed mouth 3b, 4b by feeder line 3a and 4a respectively, and described feeder line 3a and 4a mate respectively 50 ohm.
This antenna system has good isolation between two radiating elements.But, before radiating element, need white space (clearance area) A, B.This region must not comprise any metal parts, and antenna is worked under correct condition.
Summary of the invention
Therefore, the present invention relates to a kind of antenna system with 2 diversity orders, very compact but it can be manufactured at low cost, and can be suitable for the required frequency of operating frequency, especially DECT using in communication.
The object of the invention is a kind of antenna system with 2 diversity orders, this antenna system is integrated in electronic cards, comprise: the first radiating element of the type of falling F, this first radiating element have be connected to the first end of ground plane, freely the second end and conduction power pack; The second radiating element of the type of falling F, this second radiating element have be connected to the first end of ground plane, freely the second end and conduction power pack, be characterised in that, the free terminal of the first and second radiating elements separates toward each other and by the outstanding interelement of ground plane.
According to additional features of the present invention, in the outstanding element of ground plane, form slit.Preferably, improve this slit of decoupling and have the length of λ g/4, wherein λ g is at the operating frequency wavelength (wavelength in the line) that rolls off the production line.
According to another additional features of the present invention, in every side of decoupling slit, in ground plane, form the second slit and the 3rd slit.
Second and the 3rd slit make the size of radiating element can be suitable for obtaining optimum radiation in desirable frequency range.By this way, for given frequency, obtain compacter antenna system.
Brief description of the drawings
Other features and advantages of the present invention are appeared in one's mind during by the description of preferred implementation below reading, and this description is to carry out with reference to appended accompanying drawing, in figure:
Fig. 1 is described, and it relates to the antenna system of prior art;
Fig. 2 is the perspective schematic view that the type antenna of the falling F system with two radiating elements is shown;
Fig. 3 illustrates the curve as the isolation between the adaptability of the each radiating element in the antenna system of Fig. 2 of the function declaration of frequency and two radiating elements;
Fig. 4 shown in perspective schematic view according to the antenna system with 2 diversity order antennas of the present invention;
Fig. 5 illustrates the simulation curve of the isolation between adaptability and two radiating elements of the each radiating element in the antenna system of key diagram 4;
Fig. 6 is amplification plan view, illustrates according to the different size of the radiating element of antenna of the present invention.
Embodiment
For simplified characterization, identical element has the mark identical with accompanying drawing.
With reference to Fig. 2, now description is comprised to the execution mode of the antenna system of two type of radiation of falling F unit, this execution mode has overcome the problem that needs white space in prior art for the correct work of antenna.
In this antenna, propose to make two free parts of the type antenna of falling F face-to-face.But, this antenna type, it has reduced the overall size of antenna system, but it does not solve the problem intercoupling between two radiating elements known to the person skilled in the art.
As shown in Figure 2, antenna system is made up of the first radiating element 11 of the type of falling F, and this first radiating element 11 is etched on the substrate 10 with metal layer 12.This first radiating element comprises conductive arm 11a, and an end of conductive arm 11a is connected to ground plane 12, and another end 11 ' extends towards the corner of substrate 10.The second radiating element 13 of the type of falling F is to be formed in a part for substrate 10 with the similar mode of radiating element 11, and this part of substrate 10 is perpendicular with the part of receiving radiating element 11.This type units of falling F 13 also comprises conductive arm 13a, and a part of this conductive arm 13a is connected to ground, and its another part 13 ' is freely, and relative with part 11 '.
In this case, arm 11a and 13a are by feeder line 11 " and 13 " being connected to electromagnetic signal treatment circuit, this electromagnetic signal treatment circuit can be positioned on substrate 10, as represented in element 14.This structure has advantages of compact especially.
But, in this structure, simulate, obtain adaptability curve a, b and the isolation curve c shown in Fig. 3.Isolation curve c is illustrated between radiating element has very strong intercoupling, and as known to those skilled in the art, and can not obtain 2 good diversity orders.
In order to overcome this shortcoming, keep good compact degree simultaneously, the present invention proposes to be combined with the outstanding element 15 of ground plane between two free parts of the type of radiation of falling F unit.This outstanding element 15 is and the full-size of two antennas finger piece form of a compatible segment length mutually.Preferably, this outstanding element has slit 16, and its length D4 equals λ g/4 significantly through being calculated as, and wherein λ g is the guide wavelength (guided wavelength) in the outstanding element of metallization.In addition, the minimum widith of slit and the metalized portion of finger piece are relevant with technical limitations.They typically have the width of the 150 μ m orders of magnitude.
According to another characteristic of the invention, two slits 17,18 are formed in ground plane 12, in each side of decoupling slit 16.
As shown in Figure 6, the length L 1 that the operating frequency of the calculating type of radiation of falling F unit will be considered is calculated as L1=D1+H+D2+D3+D4.Length D3 is so selected to be suitable for the operating frequency of the type of radiation of falling F unit.
To such as carrying out 3D simulation with reference to Fig. 4 and 6 antenna systems of describing, this 3D simulation utilizes HFSS Ansoft electromagnetical analogies device to carry out based on Finite Element Method.In this case, selected value is:
D1＝0.12λ0
H＝0.05λ0
D2＝0.155λ0
D3＝0.109λ0
D4＝0.188λ0。
Be worth to guarantee to work in the frequency range comprising between 1.88GHz and 1.93GHz with these.The substrate using is known substrate type, i.e. FR4, and thickness is 1.4mm, has the dielectric coefficient of ε r=4.4 and 0.03 loss angle tangent.The curve obtaining in Fig. 5 shows be less than-10dB of the adaptability of each radiating element in useful frequency range, and ((curve c) for curve a, be less than-15dB of isolation b) and between two radiating elements.

Claims (4)

1. one kind has the antenna system of 2 diversity orders, this antenna system is integrated in electronic cards, comprise the substrate with ground plane, described substrate comprises the region without ground plane, this antenna system comprises: first radiating element (11) of the type of falling F, and this first radiating element has and is connected to first end, the second free terminal (11 ') of described ground plane and conduction power pack (11 "); Second radiating element (13) of the type of falling F, this second radiating element has and is connected to first end, the second free terminal (13 ') of described ground plane and conduction power pack (13 "); And decoupling element, described decoupling element projects upwards and does not have the region of ground plane described in described ground plane extends to from substrate, described outstanding element is by spaced apart described the first and second radiating elements, wherein, the free terminal of the first and second radiating elements in the described region without ground plane toward each other.
2. antenna system as claimed in claim 1, is characterized in that, forms slit (16) in the outstanding element (15) of ground plane (12).
3. system as claimed in claim 2, is characterized in that, described slit has the length of λ g/4, and wherein λ g is at the operating frequency wavelength that rolls off the production line.
4. the system as described in any one in the claims, is characterized in that, in every side of decoupling slit, forms the second slit and the 3rd slit in ground plane.
CN201010125377.1A 2009-02-27 2010-02-24 Compact antenna system with a diversity order of 2 Expired - Fee Related CN101820096B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0951272A FR2942676A1 (en) 2009-02-27 2009-02-27 COMPACT ANTENNA SYSTEM WITH DIVERSITY OF ORDER 2.
FR0951272 2009-02-27

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Publication Number Publication Date
CN101820096A CN101820096A (en) 2010-09-01
CN101820096B true CN101820096B (en) 2014-10-22

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US (1) US8405553B2 (en)
EP (1) EP2224539B1 (en)
JP (1) JP5529585B2 (en)
KR (1) KR101689801B1 (en)
CN (1) CN101820096B (en)
AT (1) ATE522007T1 (en)
BR (1) BRPI1000326A2 (en)
FR (1) FR2942676A1 (en)

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JP2010206795A (en) 2010-09-16
KR20100098300A (en) 2010-09-06
BRPI1000326A2 (en) 2011-03-22
EP2224539B1 (en) 2011-08-24
KR101689801B1 (en) 2016-12-26
FR2942676A1 (en) 2010-09-03
JP5529585B2 (en) 2014-06-25
EP2224539A1 (en) 2010-09-01
US20100220015A1 (en) 2010-09-02
ATE522007T1 (en) 2011-09-15
CN101820096A (en) 2010-09-01
US8405553B2 (en) 2013-03-26

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